<?php
header('content-type:text/html;charset=utf-8');
$servername="127.0.0.1";
$username="root";
$password="root";
$dbname="wrong_question";
// 创建连接
$conn=mysqli_connect($servername,$username,$password,$dbname);

if(mysqli_connect_error()){
    die("连接失败");

};



?>